// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
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#ifndef CEF_INCLUDE_CAPI_CEF_LOAD_HANDLER_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_LOAD_HANDLER_CAPI_H_
#pragma once

#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_browser_capi.h"
#include "include/capi/cef_frame_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

///
/// Implement this structure to handle events related to browser load status.
/// The functions of this structure will be called on the browser process UI
/// thread or render process main thread (TID_RENDERER).
///
typedef struct _cef_load_handler_t {
  ///
  /// Base structure.
  ///
  cef_base_ref_counted_t base;

  ///
  /// Called when the loading state has changed. This callback will be executed
  /// twice -- once when loading is initiated either programmatically or by user
  /// action, and once when loading is terminated due to completion,
  /// cancellation of failure. It will be called before any calls to OnLoadStart
  /// and after all calls to OnLoadError and/or OnLoadEnd.
  ///
  void(CEF_CALLBACK* on_loading_state_change)(struct _cef_load_handler_t* self,
                                              struct _cef_browser_t* browser,
                                              int isLoading,
                                              int canGoBack,
                                              int canGoForward);

  ///
  /// Called after a navigation has been committed and before the browser begins
  /// loading contents in the frame. The |frame| value will never be NULL --
  /// call the is_main() function to check if this frame is the main frame.
  /// |transition_type| provides information about the source of the navigation
  /// and an accurate value is only available in the browser process. Multiple
  /// frames may be loading at the same time. Sub-frames may start or continue
  /// loading after the main frame load has ended. This function will not be
  /// called for same page navigations (fragments, history state, etc.) or for
  /// navigations that fail or are canceled before commit. For notification of
  /// overall browser load status use OnLoadingStateChange instead.
  ///
  void(CEF_CALLBACK* on_load_start)(struct _cef_load_handler_t* self,
                                    struct _cef_browser_t* browser,
                                    struct _cef_frame_t* frame,
                                    cef_transition_type_t transition_type);

  ///
  /// Called when the browser is done loading a frame. The |frame| value will
  /// never be NULL -- call the is_main() function to check if this frame is the
  /// main frame. Multiple frames may be loading at the same time. Sub-frames
  /// may start or continue loading after the main frame load has ended. This
  /// function will not be called for same page navigations (fragments, history
  /// state, etc.) or for navigations that fail or are canceled before commit.
  /// For notification of overall browser load status use OnLoadingStateChange
  /// instead.
  ///
  void(CEF_CALLBACK* on_load_end)(struct _cef_load_handler_t* self,
                                  struct _cef_browser_t* browser,
                                  struct _cef_frame_t* frame,
                                  int httpStatusCode);

  ///
  /// Called when a navigation fails or is canceled. This function may be called
  /// by itself if before commit or in combination with OnLoadStart/OnLoadEnd if
  /// after commit. |errorCode| is the error code number, |errorText| is the
  /// error text and |failedUrl| is the URL that failed to load. See
  /// net\base\net_error_list.h for complete descriptions of the error codes.
  ///
  void(CEF_CALLBACK* on_load_error)(struct _cef_load_handler_t* self,
                                    struct _cef_browser_t* browser,
                                    struct _cef_frame_t* frame,
                                    cef_errorcode_t errorCode,
                                    const cef_string_t* errorText,
                                    const cef_string_t* failedUrl);
} cef_load_handler_t;

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_CEF_LOAD_HANDLER_CAPI_H_
